System-disconnection relay EU400 NA-protection
22
Subject to technical changes
Detailed description
11.1 Description of the connections
Connection
Description
A1 and A2
Rated control supply voltage Us, see
11, 12, 14; 21, 22, 24
Relay K1 and K2
E1
– E2
Enable
– Input
Volt-free contact
8
uSr .
8
→
8
oFF
.
8
, no function
8
uSr .
8
→
8
on
.
8
, E1-E2 closed: Vector shift active but not evaluated,
monitoring of feedback contacts off for use with generator (mains
synchronization)
8
uSr .
8
→
8
StbY
.
8
, E1-E2 closed: K1 and K2 off (standby), vector shift off
8
uSr .
8
→
8
Y1Y2
.
8
, E1-E2 closed: Feedback contacts no evaluated, vector
shift off, when using with generator (mains synchronization)
Y0, Y1, Y2
Inputs, feedback contacts
Volt-free n/o or n/c contact, self-learning when switching on
Set value > turn-on time section switch under
8
rel .
8
→
8
trel
.
8
/ can switch-
off if not connected or if external devices/switches can activate the section
switch (
8
oFF
.
8
)
I1
Supply voltage for digital outputs, max. 27 V DC
Q1…Q4
Digital output over-/under voltage/-frequency, Q3 + Q4 = ROCOF
Q5
Digital output error, in Programs with >> and << additionally the 2nd
threshold value
L1, L2, L3, N
Phase L1, L2, L3 and neutral conductor
